我开发了一个 PHP 登录/注册脚本，当用户登录时，它会启动一个会话并创建一个 cookie，然后使用以下命令将用户重定向到仪表板.php：

//get data in variables
    $emailAddress = mysqli_real_escape_string($conn,$_POST['emailAddress']);
    $password = mysqli_real_escape_string($conn,$_POST['password']);
    $remember = isset($_POST['rememberMe']);

    if(!filter_var($emailAddress, FILTER_VALIDATE_EMAIL)) {
         $error = 'Please enter a valid email address.';
    }
    elseif(email_exists($emailAddress,$conn)) { // if email address exists
        $result = mysqli_query($conn,"SELECT password FROM users WHERE email = '$emailAddress'");
        $retrievePassword = mysqli_fetch_assoc($result);
        if(!password_verify($password,$retrievePassword['password'])) // if password does not match
        {
            $error = 'Password is incorrect.';
        } else { // if password correct, log user in
            $_SESSION['email'] = $emailAddress;
            if($remember == 'on') { // if "keep user logged in" was ticked
                setcookie("email",$emailAddress,time()+7200); // keep user logged in for 2 hours
            }
            header("location: dashboard.php");
        }
    } else { // if email does not exist
        $error = 'Email address not registered.';
    }

在我所有受限页面（例如dashboard.php）的顶部，我有：

if(logged_in()) { // if user logged in, show page

logged_in() 函数是：

function logged_in(){
    if(isset($_SESSION['email']) || isset($_COOKIE['email'])) {
        return true;
    } else {
        return false;
    }
}

在数据库中，我有一个标题为 usrUserTypeNo 的列，其中管理员为“1”，普通用户为“3”。 如何将此用户类型合并到会话中，以便我可以根据用户的角色确定向用户显示哪些内容？